The most common reason for the body to feel cold is a cold, especially the wind-cold type of cold, which causes chills in the limbs and the body to feel cold. There is also a viral cold, when the body is invaded by a virus, it will have the effect of consciously expelling the virus by itself, and when the body expels the virus, it will feel consciously cold. The old feeling of cold is also due to the brain center hypothalamus thermoregulation sensitive, neuronal damage, such as the thermoregulation point functional level incomplete and dysfunctional level, will also have the feeling of conscious cold. In addition, from the perspective of traditional Chinese medicine, when a person’s body is deficient, especially kidney Yang deficiency and spleen deficiency food will also have the feeling of cold limbs. Finally, if you are in a cold environment for a long time, your body will evaporate and dissipate more heat, and you will also feel cold.